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Experimental Assessment of a Helical Coil Heat Exchanger Operating at Subcritical and Supercritical Conditions in a Small-Scale Solar Organic Rankine Cycle

Author

Listed:
  • Marija Lazova

    (Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Ghent 9000, Belgium
    Flanders Make, the Strategic Research Centre for the Manufacturing Industry, Lommel 3920, Belgium)

  • Alihan Kaya

    (Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Ghent 9000, Belgium
    Flanders Make, the Strategic Research Centre for the Manufacturing Industry, Lommel 3920, Belgium)

  • Marijn Billiet

    (Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Ghent 9000, Belgium
    Flanders Make, the Strategic Research Centre for the Manufacturing Industry, Lommel 3920, Belgium)

  • Steven Lecompte

    (Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Ghent 9000, Belgium
    Flanders Make, the Strategic Research Centre for the Manufacturing Industry, Lommel 3920, Belgium)

  • Dimitris Manolakos

    (Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, Iera Odos Street 75, Athens 11855, Greece)

  • Michel De Paepe

    (Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, Ghent 9000, Belgium
    Flanders Make, the Strategic Research Centre for the Manufacturing Industry, Lommel 3920, Belgium)

Abstract

In this study, the performance of a helical coil heat exchanger operating at subcritical and supercritical conditions is analysed. The counter-current heat exchanger was specially designed to operate at a maximal pressure and temperature of 42 bar and 200 °C, respectively. The small-scale solar organic Rankine cycle (ORC) installation has a net power output of 3 kWe. The first tests were done in a laboratory where an electrical heater was used instead of the concentrated photovoltaic/thermal (CPV/T) collectors. The inlet heating fluid temperature of the water was 95 °C. The effects of different parameters on the heat transfer rate in the heat exchanger were investigated. Particularly, the performance analysis was elaborated considering the changes of the mass flow rate of the working fluid (R-404A) in the range of 0.20–0.33 kg/s and the inlet pressure varying from 18 bar up to 41 bar. Hence, the variation of the heat flux was in the range of 5–9 kW/m 2 . The results show that the working fluid’s mass flow rate has significant influence on the heat transfer rate rather than the operational pressure. Furthermore, from the comparison between the experimental results with the heat transfer correlations from the literature, the experimental results fall within the uncertainty range for the supercritical analysis but there is a deviation of the investigated subcritical correlations.

Suggested Citation

  • Marija Lazova & Alihan Kaya & Marijn Billiet & Steven Lecompte & Dimitris Manolakos & Michel De Paepe, 2017. "Experimental Assessment of a Helical Coil Heat Exchanger Operating at Subcritical and Supercritical Conditions in a Small-Scale Solar Organic Rankine Cycle," Energies, MDPI, vol. 10(5), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:5:p:619-:d:97584
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    References listed on IDEAS

    as
    1. Shengjun, Zhang & Huaixin, Wang & Tao, Guo, 2011. "Performance comparison and parametric optimization of subcritical Organic Rankine Cycle (ORC) and transcritical power cycle system for low-temperature geothermal power generation," Applied Energy, Elsevier, vol. 88(8), pages 2740-2754, August.
    2. Steven Lecompte & Sanne Lemmens & Henk Huisseune & Martijn Van den Broek & Michel De Paepe, 2015. "Multi-Objective Thermo-Economic Optimization Strategy for ORCs Applied to Subcritical and Transcritical Cycles for Waste Heat Recovery," Energies, MDPI, vol. 8(4), pages 1-28, April.
    3. Lecompte, Steven & Huisseune, Henk & van den Broek, Martijn & Vanslambrouck, Bruno & De Paepe, Michel, 2015. "Review of organic Rankine cycle (ORC) architectures for waste heat recovery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 47(C), pages 448-461.
    4. Quoilin, Sylvain & Lemort, Vincent & Lebrun, Jean, 2010. "Experimental study and modeling of an Organic Rankine Cycle using scroll expander," Applied Energy, Elsevier, vol. 87(4), pages 1260-1268, April.
    5. Marija Lazova & Henk Huisseune & Alihan Kaya & Steven Lecompte & George Kosmadakis & Michel De Paepe, 2016. "Performance Evaluation of a Helical Coil Heat Exchanger Working under Supercritical Conditions in a Solar Organic Rankine Cycle Installation," Energies, MDPI, vol. 9(6), pages 1-20, June.
    6. Kosmadakis, George & Landelle, Arnaud & Lazova, Marija & Manolakos, Dimitris & Kaya, Alihan & Huisseune, Henk & Karavas, Christos-Spyridon & Tauveron, Nicolas & Revellin, Remi & Haberschill, Philippe , 2016. "Experimental testing of a low-temperature organic Rankine cycle (ORC) engine coupled with concentrating PV/thermal collectors: Laboratory and field tests," Energy, Elsevier, vol. 117(P1), pages 222-236.
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    Cited by:

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    2. Sun, Hongchuang & Qin, Jiang & Hung, Tzu-Chen & Huang, Hongyan & Yan, Peigang & Lin, Chih-Hung, 2019. "Effect of flow losses in heat exchangers on the performance of organic Rankine cycle," Energy, Elsevier, vol. 172(C), pages 391-400.
    3. Yao, Yecheng & Zhu, Qi’an & Li, Zhouhang, 2020. "Performance of helically coiled gas heaters in supercritical CO2 Rankine cycles: A detailed assessment under convective boundary condition," Energy, Elsevier, vol. 195(C).
    4. Hajialigol, Parisa & Fathi, Amirhossein & Saboohi, Yadollah, 2021. "Modeling and optimization of an integrated multi-generation solar system with variable heat to power ratio for supplying residential and industrial demands," Renewable Energy, Elsevier, vol. 174(C), pages 786-798.

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